Windows 11 comes with a slew of accessibility keyboard shortcuts. When you want to look ... it will show you tons of ...

To manually open the Volume Mixer in Windows 11, you need to open Windows Settings first. For that, press the Win+I keyboard shortcut. Then, go to System > Sound. Here you can find the Volume ...

Some Windows ... keyboard shortcut. Select the Power button in the bottom-right corner and restart your computer. After starting up the Windows, see if the red x cross still appears on the volume ...